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    Synthesis, crystal structure, and transport properties of Fe substituted rhombohedral skutterudite derivatives Co4−xFexGe6Se6

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    Type
    Article
    Authors
    Wei, Kaya
    Dong, Yongkwan
    Puneet, Pooja
    Tritt, Terry M.
    Nolas, George S.
    Date
    2014-11
    Permanent link to this record
    http://hdl.handle.net/10754/599606
    
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    Abstract
    We report on the synthesis and low temperature transport properties of rhombohedral derivatives of the cubic skutterudite CoSb3, namely Co4-xFexGe6Se6 with x = 0, 1, 1.5. Rietveld refinement and elemental analyses were used to identify the structure and stoichiometry of the compositions. The thermal conductivity was investigated by employing the Debye model with different phonon-scattering parameters. This investigation demonstrates that Fe substitution is feasible in these skutterudite derivatives and can significantly affect the transport properties as compared with Co4Ge6Se6. © 2014 Elsevier B.V. All rights reserved.
    Citation
    Wei K, Dong Y, Puneet P, Tritt TM, Nolas GS (2014) Synthesis, crystal structure, and transport properties of Fe substituted rhombohedral skutterudite derivatives Co4−xFexGe6Se6. Journal of Alloys and Compounds 614: 330–333. Available: http://dx.doi.org/10.1016/j.jallcom.2014.06.120.
    Sponsors
    K. Wei and G.S. Nolas gratefully acknowledge support from the II-VI Foundation. Y. Dong and G.S. Nolas gratefully acknowledge support from the National Science Foundation and Department of Energy Partnership on Thermoelectric Devices for Vehicle Applications (Grant No. 1048796). P. Puneet and T.M. Tritt acknowledge support, in part, from a KAUST Faculty Initiated Collaboration grant.
    Publisher
    Elsevier BV
    Journal
    Journal of Alloys and Compounds
    DOI
    10.1016/j.jallcom.2014.06.120
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.jallcom.2014.06.120
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